Shazam! screenwriter John August has debunked the rumor that Jake Gyllenhaal will play Captain Marvel on his official website:

But the thing is, he’s not considering. I can pretty much assure you he’s never heard of the project. And we’ve never discussed him. We’ve never seriously discussed anyone.

After several months of meetings, casting has come up exactly zero times. There’s no casting list. If there were a list, Gyllenhaal’s name would probably be on it, but trust me: there is no list. There’s no start date, no release date, no movie whatsoever. There’s just a script to be written. Which I should probably get back to.

It was announced earlier this month that August would pen the New Line Cinema comic book adaptation, to be directed by Peter Segal.